examples/ws/index.html

<!DOCTYPE html>
<html>
  <head></head>
  <body>
    <p>nanomsg ws test:&nbsp;<span></span></p>
    <input type='text'>
    <button>send</button>
    <script>
      var ws = new WebSocket('ws://127.0.0.1:7789', [
      // see the rfc on sp websocket mapping:
      // raw.githubusercontent.com/nanomsg/nanomsg/master/rfc/sp-websocket-mapping-01.txt
        'pair.sp.nanomsg.org'
      ]);
      ws.onopen = function open() { ws.send('Ping'); }
      ws.onerror = function error(err) { console.log(err); }
      ws.onmessage = function message(e) {
        var reader = new FileReader();
        reader.addEventListener('loadend', function() {
          document.querySelector('span').textContent = reader.result;
        });
        reader.readAsText(e.data);
      }

      var input = document.querySelector('input');
      input.addEventListener('keydown', function(e){
        if (e.which === 13) {
          return send();
        }
      }, false);

      document
        .querySelector('button')
        .addEventListener('click', send, false);

      function send(e) {
        ws.send(input.value); // send input value
        input.value = '';     // clear input
      }

    </script>
  </body>
</html>